Multi-circuit Manual Transfer Switch - Reliance (HD 50 amp 10 $378, HD 30 amp 6 $280)
Reliance FAQ, Transfer Switches
All Reliance Panel/Link® transfer panels are UL Listed for use with the following interchangeable branch circuit breakers:
"Upon opening the control switch I found that the wires meant to connect to the incoming feed were highly under rated. Inside the box you will find a black and a red #10 THHN wires meant to connect to the wires coming in from the input plug. #10 wire is only rated for 30 Amps. I had to replace these wires and install new lugs connecting to the copper bus bar inside the switch." - Romean HD review
Furnace Transfer Switch (HD $77)
60 Amp Utility / Generator Transfer Switch (HD $85)
VictorsHome Changeover Switch LW28-63 3 Positions 12 Terminals Universal Rotary Cam Selector Latching Switches (Amazon)
Battery Selector Switch (400A continuous marine $65)
Solar DC Isolator Switch, Compact, UL Listed,1500V PV DC Battery Disconnect Switch $67
The Reliance models are rated in 240V, so a 30A one has a 30A L1 and 30A L2.
Reliance Furnace Transfer Switch
Reliance 30 Amp 6-Circuit Manual Transfer Switch (Model # 306A, HD $248)
Reliance 50 Amp 10-Circuit Manual Transfer Switch (Model # A510C, HD $378)
Into main, Neutral is 8 AWG. Ground is 10 AWG. Black and red are 12 AWG.
Square D QO 100 Amp 8-Space 16-Circuit Indoor Surface Mount Main Lug Load Center (Model # QO816L100SCP, HD $37)
Square D QO 60-Amp 4-Space 8-Circuit Generator Main Breaker Indoor Manual Transfer Switch (Model # QO48M60DSGP, HD $119)
This feeds a single 60A input from two sources into 4 individual breakers (15/20A).
Furrion 50 Amp Automatic Transfer Switch for RV to changeover input between 125/250Volt AC power sources. With Vibrationsmart & Climatesmart Technology- F50-ATS
Timers and Relays
GAEYAELE Low Voltage Electrical (Amazon Store)
Relays: NC vs NO or other solution? (DIY Solar Forum)